Fix initial comparison combined_type

R=jkummerow@chromium.org
BUG=

Review URL: https://codereview.chromium.org/27183002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17195 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Reduce queue size in dead code elimination by eagerly processing live instructions.

BUG=
R=rmcilroy@chromium.org

Review URL: https://codereview.chromium.org/27178002

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17196 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Out-of-line constant pool on Arm: Stage 2 - Introduce ConstantPoolArray object.

Second stage of implementing an out-of-line constant pool on Arm.  This CL
Introduces the ConstantPoolArray object which will be used as the backing
store of out-of-line constant pools.  Nothing uses this object yet.

BUG=
R=ulan@chromium.org

Review URL: https://chromiumcodereview.appspot.com/22601003

Patch from Ross McIlroy <rmcilroy@chromium.org>.

git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@17197 ce2b1a6d-e550-0410-aec6-3dcde31c8c00